$port = defined('MAIL_SMTP_PORT') ? MAIL_SMTP_PORT : '25';
$username = defined('MAIL_SMTP_USER') ? MAIL_SMTP_USER : null;
$password = defined('MAIL_SMTP_PASSWORD') ? MAIL_SMTP_PASSWORD : null;
$port = defined('MAIL_SMTP_PORT') ? MAIL_SMTP_PORT : '25';
$username = defined('MAIL_SMTP_USER') ? MAIL_SMTP_USER : null;
$password = defined('MAIL_SMTP_PASSWORD') ? MAIL_SMTP_PASSWORD : null;